Samuel f



S. F. ESTELL.

Clock.

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Patented Jan. 11, 1870.

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Letters Patent N 98,678, dated Janum-y 11, 1870.

IMPROVEMENT m PROGRAMME-CLOCKS.

The Schedule refen'edto in these Letters Patent and making part of the same To all whom it may concern Be it known that I, SAMUEL F. ESTELL, of Rich mond, in the county of \Vayue, and State of Indiana, have invented an Improved Programme Clock, of which the following is a specification.

The object of my invention is to furnish a convenient andpractical clock, that may be set to strike according to any required programme.

The first part of my invention relates to the combination, with the movement and striking-works of a clock, of a wheel bearing a set of adj ustahle springs, the latter being so arranged that they may be set to lift the drop-wire of the clock, and cause it to strike at intervals of five minutes, or longer, as desired.

'Also, my invention further consists in attaching to the end of the drop-wire a small disk or piece of metal, having its lower side so inclined that it may be readily lifted by the adjustable spring before ment-ioned, and that may be more economically constructed, while it will be more easily adjusted and less liable to get out of repair than any similar device now in use.

Description of the Accompanying Drawings.

Figure 1 is an elevation of the back-plate of a clockmovement, with my improvements attached, and

Figure 2 is a section of the same.

General Description.

journal on the plate B, and is moved by means of a pinion, F, on the arbor of the minute-wheel, and a cogwheel, G, that is rigidly attached to the wheel E.

. I I are adjustable springs that are attached to a ring, H, and pass through perforations in the wheel E, as shown at J. -These springs are bent at their I outer ends, and project through V-shaped notches in the periphery of the wheel, the projecting ends of the springs serving to operate the drop-wire of the'clo'ck.

This they accomplish by striking the inclined lower surface of the disk of meta] D=- and gradually lilting it, thereby causing the clock to alarm. Passing a little further, the disk falls and the hammer stlikes once.

In this instance the wheel E makes a complete revolution once in eight hours, and is provided with ninetysix springs consequently the clock will strike once in five minutes, and the given programme will be repeated three times in twenty-four hours. I I

By raising the ends of the springs out of the notches in the periphery of the wheel E, and placing them upon the surface of the wheel between the notches, asfshown at K, they are prevented from coming in contact with the disk D. Hence it is only necessary, in order to set the clock to strike according to any given pro gramme, to raise out all the springs except those that will pass the drop-wire at the times indicated by said programme.

For convenience in setting the springsto a given programme, the wheel E is figured, as shown in the drawings.

Having thus fully described my said invention,

What I claim, and desire to secure by Letters Patent, ist In combination with the pinion F and cog-wheel G, the wheel E and adjustable springs I I, when constructed and arranged substantially in the manner and for the purpose herein set forth."

Also, in combination with the above, the disk D and drop-wire 0, when constructed and arranged as herein shown and described.

S. F. ESTELL.

Witnesses A. L. STUDY, W. P. ESTELL. 

